Fluoro-homoneplanocin A (4) was synthesized from d-ribose, via the enyne ring-closing metathesis of 9, the stereoselective opening of epoxide 23a with fluoride, and a simultaneous oxidation–elimination reaction. The key intermediate 8 is expected to serve as a versatile intermediate for the synthesis of carbanucleosides.
氟homoneplanocin A(4)由合成d -
核糖,经由的烯炔闭环复分解9,
环氧化物的立体选择性开口23a中被
氟,和一个同时氧化消除反应。关键中间体8有望用作合成核苷的通用中间体。